Words that start with 'ci' and contain 'z'

In Scrabble, what's the highest number of points you can get using this list of words that start with 'ci' and include 'z'?
One can make 'civilize' for a total score of 22 in Scrabble.

How many letters does the longest word from this list contain?
There are 16 characters in the word 'circularizations', which makes it the longest word Dictionarypedia has.

What word that starts with 'ci' and includes 'z' is the most unique?
You can find several weird words in this list, however our favorite is 'civilized'. The dictionary defines it as "Reclaimed from savage life and manners; instructed in arts, learning, and civil manners; refined; cultivated. Sale of conscience and duty in open market is not reconcilable with the present state of civilized society. J. Quincy.".

Is there any word on this page that jumps out as the most common?
The most common word is 'citizens', which in fact is the 2284^th most common word in this list.

How many words are there using this combination of letters?
You could assemble 63 words with the combination you specified.